A) why are there more chloroplasts in june than there are in october? cell type number of chloroplasts per cell in june number of chloroplasts per cell in october leaf 155 31 roots 5 4 stem 120 98 b) why are there more chloroplasts in the leaves than in the roots?

Ans.a).

Chloroplasts are membrane-bound organelles, present in photosynthetic plants and contain green-colored pigment, chlorophyll. Chloroplasts help in the process of photosynthesis.

During summer, there is enough sunlight to spend energy in growing the leaves, so there are more chloroplasts and leaves appear green as chlorophyll presents at chief pigment.

In autumn, there is not enough sunlight and cells of plants stop to make chloroplasts as there is not enough sunlight that can be used for growing of leaves. Thus, there are more chloroplasts in June as compared to October.

Ans.b).

Chloroplasts are responsible for the light absorption during photosynthesis. The process of photosynthesis mainly occurs in the cells of plant leaves and green stems as compare to cells of roots as these cells are in direct contact with sunlight. Thus, there are more chloroplasts in the leaves as compare to roots.

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

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